Posted by **Vincent** on Thursday, December 4, 2008 at 10:14pm.

sqr(x^2-4)+(x^2)/x^2+1

I got ((x^2+1)*sqr(x^2-4)+x^2)/x^2+1

But my teacher gave (sqr(x^2-4)+x^2)/x^2+1

I did the problem over again but I can't figure out why my teacher got the answer. Can someone confirm that my teacher is right or am I right?

sqr=square root

^=to the power of

/=divided by

*=multiplied by

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